「f」は FontVibe AI で作成したエンボスの文字エフェクトです。アイボリーのコットン紙に空押ししたセリフ体大文字。インクはなく、低い斜光が浮き上がった凹凸のくっきりした稜線と柔らかな影だけを描きます。

Fine paper fibers visible around letter edges where the relief meets the flat surface. Raking light from upper-left at a low angle reveals the raised topology: crisp highlight ridge along the top edge of each letter, soft shadow on the opposite side. No color added — tonal contrast is the only visual language. No gradients on letter faces, no glow, no outline strokes. A premium dark brown leather notebook cover, close-up. 'f' embossed in Trajan serif at center — pressed into the leather surface, edges sharp, leather grain visible around the letter. Warm directional light from upper-left. The embossed logo and leather texture are the entire composition. Square 1:1.